################################################################################
# Copyright 2005-2014 MERETHIS
# Centreon is developped by : Julien Mathis and Romain Le Merlus under
# GPL Licence 2.0.
# 
# This program is free software; you can redistribute it and/or modify it under 
# the terms of the GNU General Public License as published by the Free Software 
# Foundation ; either version 2 of the License.
# 
# This program is distributed in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A 
# PARTICULAR PURPOSE. See the GNU General Public License for more details.
# 
# You should have received a copy of the GNU General Public License along with 
# this program; if not, see <http://www.gnu.org/licenses>.
# 
# Linking this program statically or dynamically with other modules is making a 
# combined work based on this program. Thus, the terms and conditions of the GNU 
# General Public License cover the whole combination.
# 
# As a special exception, the copyright holders of this program give MERETHIS 
# permission to link this program with independent modules to produce an executable, 
# regardless of the license terms of these independent modules, and to copy and 
# distribute the resulting executable under terms of MERETHIS choice, provided that 
# MERETHIS also meet, for each linked independent module, the terms  and conditions 
# of the license of that module. An independent module is a module which is not 
# derived from this program. If you modify this program, you may extend this 
# exception to your version of the program, but you are not obliged to do so. If you
# do not wish to do so, delete this exception statement from your version.
# 
# For more information : contact@centreon.com
# Authors : Quentin Garnier <qgarnier@merethis.com>
#
####################################################################################

package apps::pacemaker::local::mode::crm;

use base qw(centreon::plugins::mode);

use strict;
use warnings;

sub new {
    my ($class, %options) = @_;
    my $self = $class->SUPER::new(package => __PACKAGE__, %options);
    bless $self, $class;
    
    $self->{version} = '1.0';
    $options{options}->add_options(arguments =>
                                { 
                                  "hostname:s"        => { name => 'hostname' },
                                  "remote"            => { name => 'remote' },
                                  "ssh-option:s@"     => { name => 'ssh_option' },
                                  "ssh-path:s"        => { name => 'ssh_path' },
                                  "ssh-command:s"     => { name => 'ssh_command', default => 'ssh' },
                                  "timeout:s"         => { name => 'timeout', default => 30 },
                                  "sudo"              => { name => 'sudo' },
                                  "command:s"         => { name => 'command', default => 'crm_mon' },
                                  "command-path:s"    => { name => 'command_path', default => '/usr/sbin' },
                                  "command-options:s"       => { name => 'command_options', default => '-1 -r -f 2>&1' },
                                  "warning"                 => { name => 'warning', },
                                  "standbyignore"           => { name => 'standbyignore', },
                                  "resources:s"             => { name => 'resources', },
                                  "ignore-failed-actions"   => { name => 'ignore_failed_actions', },
                                });
    $self->{threshold} = 'CRITICAL';
    $self->{resources_check} = {};
    return $self;
}

sub check_options {
    my ($self, %options) = @_;
    $self->SUPER::init(%options);

    if (defined($self->{option_results}->{warning})) {
        $self->{threshold} = 'WARNING';
    }
    if (defined($self->{option_results}->{resources})) {
        foreach (split(/,/, $self->{option_results}->{resources})) {
            my ($rsc_name, $node) = split(/:/, $_);
            if (defined($rsc_name) && $rsc_name ne '' && 
                defined($node) && $node ne '') {
                $self->{resources_check}->{$rsc_name} = $node;
            }
        }
    }
}

sub parse_output {
    my ($self, %options) = @_;
    
    my @standby;
    $self->{output}->output_add(severity => 'OK', 
                                short_msg => "Cluster is OK");
    foreach my $line (split /\n/, $options{crm_out}) {
        if ($line =~ /Connection to cluster failed\:(.*)/i ) {
            $self->{output}->output_add(severity => 'CRITICAL', 
                                        short_msg => "Connection to cluster FAILED: $1");
            return ;
        } elsif ($line =~ /Current DC:/) {
            if ($line !~ m/partition with quorum$/ ) {
                $self->{output}->output_add(severity => 'CRITICAL', 
                                            short_msg => "No Quorum");
            }
        } elsif ($line =~ /^offline:\s*\[\s*(\S.*?)\s*\]/i) {
            # Count offline nodes
            my @offline = split( /\s+/, $1 );
            my $numoffline = scalar @offline;
            $self->{output}->output_add(severity => $self->{threshold}, 
                                        short_msg => "$numoffline Nodes Offline");
        } elsif ($line =~ /^node\s+(\S.*):\s*standby/i) {
            push @standby, $1;
        } elsif ($line =~ /\s*([0-9a-zA-Z_\-]+)\s+\(\S+\)\:\s+Started\s+([0-9a-zA-Z_\-]+)/) {
            # Check Resources pos
            if (defined($self->{resources_check}->{$1}) && $self->{resources_check}->{$1} ne $2) {
                $self->{output}->output_add(severity => $self->{threshold}, 
                                            short_msg => "Resource '$1' is on node '$2'");
            }
        } elsif ($line =~ /\s*([0-9a-zA-Z_\-]+)\s+\(\S+\)\:\s+Stopped/) {
            $self->{output}->output_add(severity => $self->{threshold}, 
                                        short_msg => "Resource '$1' Stopped");
        } elsif ($line =~ m/\s*stopped\:\s*\[(.*)\]/i) {
            # Check Master/Slave stopped
            $self->{output}->output_add(severity => $self->{threshold}, 
                                        short_msg => "$1 Stopped");
        } elsif ($line =~ /^Failed actions\:/ && !defined($self->{option_results}->{ignore_failed_actions})) {
            # Check Failed Actions
            $self->{output}->output_add(severity => 'CRITICAL', 
                                        short_msg => "FAILED actions detected or not cleaned up");
        } elsif ($line =~ /\s*(\S+?)\s+ \(.*\)\:\s+\w+\s+\w+\s+\(unmanaged\)\s+FAILED/) {
            # Check Unmanaged
            $self->{output}->output_add(severity => 'CRITICAL', 
                                        short_msg => "$1 unmanaged FAILED");
        } elsif ($line =~ /\s*(\S+?)\s+ \(.*\)\:\s+not installed/i) {
            # Check for errors
            $self->{output}->output_add(severity => 'CRITICAL', 
                                        short_msg => "$1 not installed");
        } elsif ($line =~ /\s*(\S+?):.*(fail-count=\d+)/i) {
            # Check for resource Fail count
            $self->{output}->output_add(severity => 'WARNING', 
                                        short_msg => "$1 failure detected, $2");
        }
    }
    
    if (scalar(@standby) > 0 && !defined($self->{option_results}->{standbyignore})) {
        $self->{output}->output_add(severity => $self->{threshold}, 
                                    short_msg => join( ', ', @standby ) . " in Standby");
    }
}

sub run {
    my ($self, %options) = @_;

    my $stdout = centreon::plugins::misc::execute(output => $self->{output},
                                                  options => $self->{option_results},
                                                  sudo => $self->{option_results}->{sudo},
                                                  command => $self->{option_results}->{command},
                                                  command_path => $self->{option_results}->{command_path},
                                                  command_options => $self->{option_results}->{command_options});
    $self->parse_output(crm_out => $stdout);
 
    $self->{output}->display();
    $self->{output}->exit();
}

1;

__END__

=head1 MODE

Check Cluster Resource Manager (need 'crm_mon' command).
Should be executed on a cluster node.

=over 8

=item B<--warning>

If failed Nodes, stopped Resources detected or Standby Nodes sends Warning instead of Critical (default)
as long as there are no other errors and there is Quorum.

=item B<--standbyignore>

Ignore any node(s) in standby, by default return threshold choosen.

=item B<--resources>

If resources not started on the node specified, send a warning message:
(format: <rsc_name>:<node>,<rsc_name>:<node>,...)

=item B<--ignore-failed-actions>

Failed actions errors are skipped.

=item B<--remote>

Execute command remotely in 'ssh'.

=item B<--hostname>

Hostname to query (need --remote).

=item B<--ssh-option>

Specify multiple options like the user (example: --ssh-option='-l=centreon-engine" --ssh-option='-p=52").

=item B<--ssh-path>

Specify ssh command path (default: none)

=item B<--ssh-command>

Specify ssh command (default: 'ssh'). Useful to use 'plink'.

=item B<--timeout>

Timeout in seconds for the command (Default: 30).

=item B<--sudo>

Use 'sudo' to execute the command.

=item B<--command>

Command to get information (Default: 'crm_mon').
Can be changed if you have output in a file.

=item B<--command-path>

Command path (Default: '/usr/sbin').

=item B<--command-options>

Command options (Default: '-1 -r -f 2>&1').

=back

=cut